Implement ServiceWorkerClient attributes [2/3]

content/browser/service_worker/service_worker_version.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/service_worker_version.h"
 
 #include "base/command_line.h"
+#include "base/memory/ref_counted.h"
 #include "base/stl_util.h"
 #include "base/strings/string16.h"
 #include "content/browser/message_port_message_filter.h"
 #include "content/browser/message_port_service.h"
 #include "content/browser/service_worker/embedded_worker_instance.h"
 #include "content/browser/service_worker/embedded_worker_registry.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_registration.h"
 #include "content/browser/service_worker/service_worker_utils.h"
 #include "content/common/service_worker/service_worker_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_switches.h"
 
 namespace content {
 
 typedef ServiceWorkerVersion::StatusCallback StatusCallback;
 typedef ServiceWorkerVersion::MessageCallback MessageCallback;
 
+class ServiceWorkerVersion::GetClientDocumentsCallback
+    : public base::RefCounted<GetClientDocumentsCallback> {
+ public:
+  GetClientDocumentsCallback(int request_id, int pending_requests)
+    : request_id_(request_id)

[dcheng, 2014/12/10 20:17:12]

I think this should be indented another two spaces.

[Kunihiko Sakamoto, 2014/12/11 01:20:31]

Done.

+    , pending_requests_(pending_requests) {}

[dcheng, 2014/12/10 20:17:12]

Chrome convention is to put the "," on the previous line.

[Kunihiko Sakamoto, 2014/12/11 01:20:31]

Done.

+  void AddClientInfo(int client_id, const ServiceWorkerClientInfo& info) {
+    clients_.push_back(info);
+    clients_.back().client_id = client_id;
+  }
+  void DecrementPendingRequests(ServiceWorkerVersion* version) {
+    if (--pending_requests_ > 0)
+      return;
+    // Don't bother if it's no longer running.
+    if (version->running_status() == RUNNING) {
+      version->embedded_worker_->SendMessage(
+          ServiceWorkerMsg_DidGetClientDocuments(request_id_, clients_));
+    }
+  }
+
+ private:
+  friend class base::RefCounted<GetClientDocumentsCallback>;
+  virtual ~GetClientDocumentsCallback() {}
+
+  std::vector<ServiceWorkerClientInfo> clients_;
+  int request_id_;
+  size_t pending_requests_;
+
+  DISALLOW_COPY_AND_ASSIGN(GetClientDocumentsCallback);
+};
+
+class ServiceWorkerVersion::GetClientInfoCallback {
+ public:
+  GetClientInfoCallback(int client_id,
+                        scoped_refptr<GetClientDocumentsCallback>& callback)

[dcheng, 2014/12/10 20:17:12]

Blink doesn't allow mutable refs so this should be const scoped_refptr<...>&
callback

[Kunihiko Sakamoto, 2014/12/11 01:20:31]

Done.

+    : client_id_(client_id)

[dcheng, 2014/12/10 20:17:12]

Ditto on indenting.

[Kunihiko Sakamoto, 2014/12/11 01:20:31]

Done.

+    , callback_(callback) {}
+
+  void OnSuccess(ServiceWorkerVersion* version,
+                 const ServiceWorkerClientInfo& info) {
+    callback_->AddClientInfo(client_id_, info);
+    callback_->DecrementPendingRequests(version);
+  }
+  void OnError(ServiceWorkerVersion* version) {
+    callback_->DecrementPendingRequests(version);
+  }
+  void OnCancel(ServiceWorkerVersion* version) {
+    callback_->DecrementPendingRequests(version);
+  }
+
+ private:
+  int client_id_;
+  scoped_refptr<GetClientDocumentsCallback> callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(GetClientInfoCallback);
+};
+
 namespace {
 
 // Default delay for scheduled stop.
 // (Note that if all references to the version is dropped the worker
 // is also stopped without delay)
 const int64 kStopWorkerDelay = 30;  // 30 secs.
 
 // Default delay for scheduled update.
 const int kUpdateDelaySeconds = 1;
 
@@ skipping 605 matching lines @@
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_NotificationClickEventFinished,
                         OnNotificationClickEventFinished)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_PushEventFinished,
                         OnPushEventFinished)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_GeofencingEventFinished,
                         OnGeofencingEventFinished)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_PostMessageToDocument,
                         OnPostMessageToDocument)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_FocusClient,
                         OnFocusClient)
+    IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_GetClientInfoSuccess,
+                        OnGetClientInfoSuccess)
+    IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_GetClientInfoError,
+                        OnGetClientInfoError)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void ServiceWorkerVersion::OnStartMessageSent(
     ServiceWorkerStatusCode status) {
   if (status != SERVICE_WORKER_OK)
     RunCallbacks(this, &start_callbacks_, status);
 }
@@ skipping 21 matching lines @@
   int request_id = activate_callbacks_.Add(new StatusCallback(callback));
   ServiceWorkerStatusCode status =
       embedded_worker_->SendMessage(ServiceWorkerMsg_ActivateEvent(request_id));
   if (status != SERVICE_WORKER_OK) {
     activate_callbacks_.Remove(request_id);
     RunSoon(base::Bind(callback, status));
   }
 }
 
 void ServiceWorkerVersion::OnGetClientDocuments(int request_id) {
-  std::vector<int> client_ids;
+  if (controllee_by_id_.IsEmpty()) {
+    if (running_status() == RUNNING) {
+      embedded_worker_->SendMessage(
+          ServiceWorkerMsg_DidGetClientDocuments(request_id,
+              std::vector<ServiceWorkerClientInfo>()));
+    }
+    return;
+  }
+  scoped_refptr<GetClientDocumentsCallback> callback(
+      new GetClientDocumentsCallback(request_id, controllee_by_id_.size()));
   ControlleeByIDMap::iterator it(&controllee_by_id_);
   TRACE_EVENT0("ServiceWorker",
                "ServiceWorkerVersion::OnGetClientDocuments");
   while (!it.IsAtEnd()) {
-    client_ids.push_back(it.GetCurrentKey());
+    int client_request_id = get_client_info_callbacks_.Add(
+        new GetClientInfoCallback(it.GetCurrentKey(), callback));
+    it.GetCurrentValue()->GetClientInfo(embedded_worker_->embedded_worker_id(),
+                                        client_request_id);
     it.Advance();
   }
-  // Don't bother if it's no longer running.
-  if (running_status() == RUNNING) {
-    embedded_worker_->SendMessage(
-        ServiceWorkerMsg_DidGetClientDocuments(request_id, client_ids));
-  }
 }
 
+void ServiceWorkerVersion::OnGetClientInfoSuccess(
+    int request_id,
+    const ServiceWorkerClientInfo& info) {
+  GetClientInfoCallback* callback =
+      get_client_info_callbacks_.Lookup(request_id);
+  if (!callback) {
+    // The callback may already have been cleared by OnStopped, just ignore.
+    return;
+  }
+  callback->OnSuccess(this, info);
+  get_client_info_callbacks_.Remove(request_id);
+}
+
+void ServiceWorkerVersion::OnGetClientInfoError(int request_id) {
+  GetClientInfoCallback* callback =
+      get_client_info_callbacks_.Lookup(request_id);
+  if (!callback) {
+    // The callback may already have been cleared by OnStopped, just ignore.
+    return;
+  }
+  callback->OnError(this);
+  get_client_info_callbacks_.Remove(request_id);
+}
+
 void ServiceWorkerVersion::OnActivateEventFinished(
     int request_id,
     blink::WebServiceWorkerEventResult result) {
   DCHECK(ACTIVATING == status() ||
          REDUNDANT == status()) << status();
   TRACE_EVENT0("ServiceWorker",
                "ServiceWorkerVersion::OnActivateEventFinished");
 
   StatusCallback* callback = activate_callbacks_.Lookup(request_id);
   if (!callback) {
@@ skipping 181 matching lines @@
   SetStatus(REDUNDANT);
   StopWorker(base::Bind(&ServiceWorkerUtils::NoOpStatusCallback));
   if (!context_)
     return;
   std::vector<ServiceWorkerDatabase::ResourceRecord> resources;
   script_cache_map_.GetResources(&resources);
   context_->storage()->PurgeResources(resources);
 }
 
 }  // namespace content